Ore-car.



F. SEABERG.

ORE GAR.

APPLICATION FILED JAN. 12, 1009.

Patented Aug. 13, 1912v 6 SHBETS-SHEET 1.

F. SE'ABBRG.

ORE CAR.

'APPLIOATION IILED JAN. 12, 1909.

Patented Aug. 13,1912.

6 i1 KEETE-SHEET 2.

F. SEABERG.

ORE GAR.

ABPLIOATION TILED JAN. 12, 1009.

1 35,389. Patented Aug. 13,1912.

6 sunk-sum a.

W M777SS5T v Willa/r722 F. SEABERG.

ORE GAR.

APPLICATION FILED JAN. 12, 1909.

Patented Aug. 13,1912.

6 SHEETS-SHEET 5.

P. SEABERG.

ORE GAR.

APPLIUATION FILED JAN. 12, 1909.

Patented Aug. 13, 1912.

6 SHEBTS"SHEET 6 UNITED srA'rEs PATENT OFFICE.

FREDERICK. SELABERG, OF CHICAGO, ILLINOIS, ASSIGNOR, BY' MESNE ASSIGNMENTS,

TO NATIONAL DUEL? CAR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION O MAINE.

ORE-CAR.

Specification of Letters Patent.

ilpplication filed January 12, 1909.

Patented Aug. 13,1912.

Serial No. 471,835.

To all whom itma/y. concern:

Be it known that I, Fnnnsn'rcx Snnnnno, a citizen of the United States, residing at Chicago, in thecounty of Cook and State .of Illinois, have invented certain new and rected to.-the dump door operating mechanism and the location and housing of the operating parts.

'15, The particular nature-of the invention will more clearly appear from the following description and claims, taken in connection with the accompanying. drawings forming part of this application, in which?- Figure 1 is an end view of a car constructeol according. to my invention. Fig. 2 is a transverse section at the center of the car. Fig. 3 is a detail view of a shaft supporting bracket forming part of the structure illustrated'. Fig. 4 is a side elevation of the car. Fi' .."5 is a plan viewof the car. Fig. 6 is a agmentary side elevation of part of the door and that part of the operating mechanism adjacent thereto. Fig. 7 is a detail view showing the connection of the door to a part of the operating-mechanism, a part of the structure. being shown in section on the line 7, 7 ofFig. 8, and Fig. 8 is a detail.

' view in transverse section, showing the oper- =atingmechan1sm in severaldifi'erent positions.

The car illustrated 1n the drawings 1s primarily designed for'transporting ore, but

i used for otherpurposes.

the operating mechanism shown and described in connectiontherewith may be used inconnection with cars of other type and i The ore car illustra'ted has vertical sides 1 reinforced u-pon .4 u fill the outside by angle irons 2, and inclined ends 3,tlie;sides and ends being reinforced at the top by angle irons l. I

The underframe of the car comprises a center sill made up in the present instance of. channels 5 connected at the top and bottom by plates 6, and bolsters 7. Rising from the ends of the bolsters are posts. or pedeS:

girder sides l. Extending longitudinally of thfsides ofthe-car are channels 9 aving their flanges directed outward and their up per surface about even with the upper surface of the channels 5 forming the center Slll. The channels 9, however, are of less depth than the channels 5. In the present instance, the sheets 10 forming the plate girder sides extend to about the level of the bottom of the center sill channels 5. The parts 11 of the sheets 10 which project below the channels 9 are turned outwardly andtal 8, and extending from said gusset plate to the side plate of the car body is a diagonal brace 21.

The doors 13 are hinged to brackets 22 secured to the Webs of the channels 5- at such a height that in their closed position the doors have a slight incline downward toward the car sides. The main power shaft 26 for operating the doors is mounted in 'bearings 24 just above the center of and supported by the center sill. The bearings 24, as shown in. Fig. 6, are secured to angles 25, which in turn are riveted to the top plates of the center sill. In order to protect the operating shaft 26 and the door hinges from becoming clogged with the contents of the car, I cover these parts with a housmgwhich consists of plates 27 which slope downwardly from a longitudinal line above the center of the center sill to the top edges thereof, and then downwardly at a less angle to a point just above the doorswhen intheir closed position. As shown in Fig. 6, the plates 27 are supported from the. center sill by means of plates 28 which are secured to the top plates; of the center sill by means of angles 29. The cover plates 27 are secured to the supporting plates 28 by means of angles 23. Above the meeting edges of the plates 27 is a ridge 30 taking the form of an angle, the apex of which lies along the center of the car with the webs lapping over and securedto the. cover plates 27. A counter shaft 321 located beneath. the main operating shaft 26- is -supported in bearings 33 which in turn are supported by hangers 3.4 depend.- ing from the! center sill. As shown in Fig;

' nels 5.

car,

3, the hangers 34 have approximately the form of a letter U, the legs of which are riveted to the inside of the center sill chan The bend of the U is made concave,-as shown at36-and a strap 37 cooperates with the bend 36 to form a seat for the bearing 33. The main operating shaft 26 extends through to one end of the wheels 35 and 36 are secured. The outer star -wheel 36 is operated by a reversible pawl 37 mounted upon the operating handle 38, and by means of said operating handle and pawl, the shaft 26 may be turned in either direction. Cotiperating with the inner star wheel 35, is an escapement lever l0 having a pallet end 44, whereby under the rot-ative force imparted to shaft 26 by the falling doors, said shaft maybe given a grad ual-step by step movement in order to ease the shock of the falling doors.

Secured to the inner end of the shaft 26 is an operating chain 42 which at its opposite end is secured to a drum 4L3 fixedly mounted upon the the diameter of the drum.

counter shaft 32, 43 being greater than that of the shaft 26 for tlie purpose of reducing the amount of force necessary to operate the doors.

Depending from the body of the car at each side of each of the dump doors are pivotedhanger links 15. As shown in Figs. 4,

7 and 8, these links are hung upon pivots 46 extending outward from the vertically downturned edge portion of the end plates 3. The pivots 46 are further supported by hangers 48 riveted to the outsideof the inclined part of said plates 3 and engaging said pivot at' a point intermediate the two members'of which each hanger link lfi is composed. Each member of each of the hanger links 1-5 is provided at top and bottom with an inwardly projecting hub 50 for the purpose of spacing the members apart inorder that they may receive between them the rocker arm or lever 51.

-The levers 51 in the present instance are constructed in the form of sectors or segmental sheaves, and are pivoted at one end of the arcuate portion to a pin 52 extending therethrough and through the lower ends of the members of the hanger 4:5. Secured, to one of the straight sides. of the segmental sheave'or sector lever 51 by means of an eye bolt 53 adjustably attached to the apertured lug 51 by nuts 51, 51 is\a chain 53 and upon its projecting end two starv parent that the unwinding of the upon the opposite ends of a bar extending continuously across the door and fastened thereto. As will be apparent from an inspection of Figs. 4, 6 and 7 the hanger le- I vers 45 and segmental sheave or lever 51 are located outside of the range of movement of the dump door and are, therefore, free to swing to the positions illustrated in Fig, 8.

Referring chain 42 from the shaft 26 will perinitthe counter shaft 32 to rotate in clockwise direction thus allowing the doorchains 53 to unwind under the weight of the doors and the load thereon. When the doors are'in closed position as illustrated inFigs; 1 and 2, their weight and that of the load acting vertically downward upon the pivots 56 levers 51 outwardly toward the sides of the car. Owing, however, to the fact that when the doors are closed each of the pivots 56 lies not far from the vertical line extending through the pivots 52, the component of the weight of the doors and load acting to throw the segmental sheaves or links 51 outward will not be large. The parts are so proportioned, however, that this component will be suiiicient to start the opening move ment of the doors, butnot sufiicient to impose any greater strain upon the door oper ating chains 53 and 42 even when the car is loaded. The downward force acting upon the segmental sheaves or links 51 through of the hanger links &5, and due to this inward thrust the parts will assume the posi- .tion designated in Fig. 8 by the letter A, this being the. position assumed when the doors are a little less than half opened. A

continuation of the opening movement draws the hanger link outward again, and

when the door is in its fully opened posi tion, the parts occupy the position designated in Fig. 8 by the letter B.

In closing the doors by rotating the main shaft 26in counter clockwise direction by means of the operating lever 18, the opera 'tion of the parts will be as follows: Referring to Fig. 8, and assuming the door is in its wide open position, as designated by the reference numerals, having the letter B ap' plied thereto, the first etfect of tension upon the chain due to rotation of the main shaft 26 will be to effect a toggle action, the

arms of the toggle being the hanger link 45 and the part of the segmental sheave or lever 51 in alinement therewith, the ower being applied. at the elbow 52 or joint of the toggle. As the movement progresses, the amount of the toggle action will decrease and the segmental sheave oi lever 51 will begin to rotate upon its axis 52, exercising a simple lever action upon the door through to Figs. 1 and 2, it will be ap-..

will have a tendency to rotate the segmental sheaves or aosaeee the pivot 56. It will be apparent that in the position of the parts designated by the letter B in Fig. 8, when power is first applied to close the door it acts upon the mechanism considered as a toggle, power being applied in the most advantageous manner, that is, at the elbow thereof; but in this position of the parts, the power exercised through the chain 53 has but little etiiciency in its application to the segmental sheave orlever 51 considered as a simple lever, for the reason that the power is applied almost at the fulcrum of the part 51 considered as a simple lever. As the movementprogresscs, however, the arcuate edge of the segmental sheave or lever 51 thrusts the chain upward away from the pivot 52, thus progressively, increasing the advantage of the power applied to the part 51 as a simple lever. This increase in the length of the power arm continues through the closing movement until when the door has almostreached the closed position, the length of the lever arm is greatest and is equal to a straight line joining the angles of the lever at the ends of its arcuate side.

By means of the mechanism above described aanost efficient door operating mech-v anism is provided, one in which, at the beginning of the closing movement, power isf' advantageously applied to a toggle, after which one of the members of the toggle is utilized as a simple lever with gradual increase of power arm, which increase of length reaches its maximum when the door reaches its closed position and encounters the greatest resistance due to any obstruction which may be in the way and to the necessity of bringing the door tightly against the adjoining fixed parts of the car body. The mechanism possesses the further advantage of having its parts so arranged that in the closed position of the doors only a slight component of the weight of the doors and load acts to cause tension upon the operating chains.

I would have it understood that I do not desire to limit myself to the precise construction and arrangement of parts shown in the drawings and herein described, as various modifications or alterations may be made without departing from my original invention.

I claim:

1. In a car of thecl ass described, a door, a hanger link pivoted to the car structure adjacent said door, an intermediate member pivoted to said link and. having a part engaging said door, and means for moving said intermediate member from a position where its pivotal connection to said hanger link lies between the pivotal connection of said hanger link and car structure and the point of engagement between said. intermediate member and door, to a position where the point of engagen'ient of said intermediate member and door lies between the pivotal connections of said hanger link with said our structure and said intermediate member.

1n a car of the class described, a door, a hanger link pivoted to the car structure adjacent said door, an intermediate member pivoted to said link and having a part engaging said door, and a chain and winding mechanism for moving said intermediate member from a position where its pivotal connection to said hanger link lies between the pivotal connection of said hanger link and car structure and the point of engagement between said intermediate member and door, to a position where the point of engagement of said intermediate member and door lies between the pivotal connections of said hanger link with said car structure and said intermediate member.

3. In a car of the class described, a dump door, a link pivoted to the car structure adjacentsaid door, a lever pivoted to the free end of said link and having a part engaging said door, means for actuating said lever to close said door, the parts being so disposed and proportioned that as the door approaches its closed position the point of engagement between said lever and door approaches the straight line between the pivots connecting said link to thecar structure and to said lever, and in the closed position of the door rests adjacent said line.

41-. In a car of the class described, a dump door, a link pivoted to the car structure adjacent said door, a lever pivoted to the free end of said link and having a part engaging said door, a chain and winding mechanism for actuating said lever to close said door,- the parts being so disposed and proportioned that as the door approaches its closed position the point of engagement between said lever and door approaches the straight line between the pivots connecting said link to the car structure and to said lever, and in the closed position of the door rests adjacent said line.

5. In a car of the class described, a dump door hinged to the car structure, a depending link pivoted to the car structure adjacent the door, a lever pivoted to the free end of-said link and having a part engaging said door, a winding shaft, a chain connecting said lever and winding shaft and adjustably attached to said lever, and means for rotatingsaid shaft.

Q. In a car of the class described, a hinged ddor, a link pivoted to the car structure adjacent said door, a lever pivoted to the free end of said link and to said door. and a winding shaft and winding chain operatively connected to said lever, said lever being provided with a bearing surface for said chain, said bearing surface being of such edge of said door,

form that when said link and lever are in allneluent power is applied substantially at their pivotal Connection to cause them to opcrate as a toggle, afterwhich power is appliedto said lever with gradually increasing advantage to rotate it upon its pivotal connection with said link.

a 7. In a car of the class described, a

hinged drop door, a depending link pivoted to the car structure adjacent the free an. intermediate link pivoted to the free end of said depending link ing' shaft adjacent and to said door near its free edge, a Windthe hinged edge ofsaid' door, achain connecting said winding shaft I and said intermediate lever, said intermedi ate link being provided with a bearing surface for said chain to govern the point of ap- I pli'cation of power thereto during its 1novement to close said door;

8. In a: Cit-T of the class described, a

-'hinged drop door, a depending link adja- [cent the free edge thereof and having-its 1 free 'endbelow the plane of said door when in closed-position, an intermediate link pivoted to the free end ofsaid depending link and to saiddoor, said intermediate link in-' clining upwardly and outwardly from its pivottoward the free edge of said door,

when the latter 1s in closed position, 'a

' winding shaft adjacent the hinged edge of said door, and a cham connecting said winding shaft and intermediate link. 7

. 9. In a car of the class described, a hinged drop door, a depending link adjacent the free" edge thereof'and having its free end below the plane of said door when in closed position, free end. of said depending'link and to said an intermediate link pivoted to the door, said intermediate link inclining upwardly and outwardly from its pivot toward the free edge of said door when the latter is in closed position,

" adjacent the hinged edge of said door, and

angle to the free end of a chain connecting said winding shaft and intermedmte link, said intermediate hnk .being provided with a bearing surface for said cha1n.-

" said depending link.

11. In a car of the class described, a power shaft, a counter shaft, a drum on said counter shaft of greater diameter than either of said shafts, a chain connected to said power shaft and drum, a dump door,

' a depending link pivoted to the car structure adjacent said dump door, an'operating a winding shaft a depending link pivijcea'sse link pivoted to said depending link and to said door, and a chain secured to said operating link and to said counter shaft.

12. In a car of the class described, a power shaft, a counter shaft, a drum on said counter shaft of greater diameter than either of said shafts, a chain connected to said-power shaft and drum, a dump door, a depending link pivoted to the car struc ture adjacent said dump door, an operating link pivoted to said depending link and to said door, and a chain secured to said opcrating link and to said counter shaft, said operating link being provided with a bear-- ing surface for said chain.

13. In a car of the class described, a power "shaft journaled adjacent the longitudinal median plane and extending 1n-- ward from the end thereof, a counter shaft adjacent the longitudinal median plane of the car and below the power shaft, a drum on said counter shaft, 9. chain secured to said power shaft and drum, dump doors hinged at each side of the longitudinal. center of the car, depending links pivoted to the car structure adjacent said doors, operating links pivoted to said depending links and to said doors, and chains secured to said operating links and tosaid counter shaft.

' 14. In a car of the ,class described, a cen* ter still, a housing extending downwardly and outwardly from a longitudinal line above said center sill, dump doors hinged to said center sill beneath said housing, depending links pivoted to the car structure adjacent the sides of said doors, operating links pivoted to said depending links and to said doors adjacent their free edges, a shaftadjacent thev longitudinal center of the car, chains secured to said shaft and to said operating links, and means for rotating said shaft.

15. In a car of the class described, a center sill, a housing extending downwardly and outwardly from a longitudinal line above said center sill, dump doorshinged to said center sill beneath said housing, depending links pivoted to the car structure adjacent the sides of said doors,.operating links pivoted to said depending links and to said doors adjacent their free edges, a power shaft extending longitudinally beneath said housing, a counter shaft beneath said power shaft, a chainconnected to said powerand counter shafts and chains connected respectively to said counter shaft and said operating links.

16. In a car of the class described, dum doors, links pivoted to the car structure a jacent said doors, operating links pivoted to said depending links and engaging said doors,a chain adjustably secured to each of nism for said chain.

17; In a car of the class described, dump doors, links pivoted to the car structure adj acent said doors, operating links pivoted to said depending links and engaging said doors, a chain secured to each of said operating links, said operating link being provided with a bearing surface for'said chain, and winding mechanism for said chain.

18. In a car of the class described, a dump door, opera ting connections between the car body and said door, each of said operating connections comprising a plurality of links, means for applying force to said links at their pivotal connection'to cause them to act as a toggle and for applying force to one of said links to cause it to act as a simple lever.

19. Ina car of the class described, a dump door, a segmental sheave mounted on said door and pivotally supported by the car structure at a point removed from its attachment to said door, and means for causing rotation of said sheave whereby said door may be raised.

'20. In a car of the class described, a dump door, a segmental sheave mounted on said door and pivotally supported by the car structure at a point removed from its attachment to said door, and a flexible member adapted to wind on said sheave and cause rotation thereof whereby said door may be raised. a

21. In a car of the class described, a dump door, a segmental sheave pivotally attached to said door, a depending link pivotally attached to the car structure and also pivotally attached to said sheave at a point removed from the pivotal attachment of said sheave to said door, and means for causing rotation of said sheave.

22. -In a car of the class described, a dump door, a segmental sheave mounted on said door, a movable supporting pivot for said sheave attached thereto at a point removed from the point of attachment to said door,

.and means for causing rotation of said sheave.

23. In a car of the class described, a dump door, a depending link pivotally attached to the car structure, a second link pivotally-attached to said depending link at one end and to said door at the other end, said links being adjacent when said door is closed and in alinement when said door is open, and means attached to said second link and independent of said depending link for causing a movement of said second link from its nk to'its position adjacent said link.

position in alinement with said depending 24:. In a car ofthe class described, a dump door, a depending link pivotally attached to thecar structure, a second link pivotally attached to said depending link at one end and ing a movement of said links from their po- 7 sitions in alinement to their adjacent positions.

25. In a car of the class described, a dump door, two freely moving links, one being pivotally attached to the car structure at one end, the other being pivotally attached to the door at one end adjacent said first named link to hold said door closed, said links being pivoted, to each other at their opposite ends, and means adapted to wind upon said second named link for normally holding said second named link in its door holding position, said means being also adapted to move said link to said position.

26. In a car of the class described, a dump door, a depending link pivotally attached to the car structure, an intermediate member having a part engaging said door and pivoted to said link at a'point removed from its engagement with said door, said member being adapted by its rotation to raise said door to a closed position, and means adapted to wind u on said member for applying a rotating force to said member.

27. In a car of the class described, a dump door, a depending link pivotally attached to the car structure, an intermediate member havinga part engaging said door and pivoted to said link at a point removed from its. engagement with said, door, said member be ing adapted by its rotation to raise said door to a closed position, and a flexible member adapted to wind upon said intermediate member and impart a rotating force to said intermediate member.

28. In a car of the class described, a dump door, a depending link pivotall attached to the car structure, an interme' iate member having a part engaging said door and pivoted to said link at a point removed from its engagement with said door, said member being adapted by its rotation to raise said door to a closed adapted to wind upon said intermediate member and impart a rotating force to said intermediate member, and means for taking up the slack of said flexible member.

' In testimony whereof, I have subscribed my name.

FREDERICK SEABERGQ Witnesses I'IENRY A. PARKS, WALTER A. Sco'rr.

i position, a flexible member. 

